Home / 1,781.80-2,667.30-1,346.20

Finding the Fourth Proportional to 1,781.80, 2,667.30 and 1,346.20

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Solution

The fourth proportional to 1,781.80, 2,667.30 and 1,346.20 is: 2,015.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,781.80 : 2,667.30 = 1,346.20 : x
  2. Step 2: Convert to fraction form
    1,781.80/2,667.30 = 1,346.20/x
  3. Step 3: Cross multiply
    1,781.80x = 2,667.30 × 1,346.20
  4. Step 4: Simplify right side
    1,781.80x = 3,590,719.26
  5. Step 5: Solve for x
    x = 3,590,719.26/1,781.80
  6. Step 6: Final answer
    x = 2,015.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.